Spellchecker updated to produce better html output

doc/doxygen/CorpusMagician_8java_source.html

doc/doxygen/ExbEventTokenizationChecker_8java_source.html

doc/doxygen/ExbForbiddenSymbolsChecker_8java_source.html

doc/doxygen/ExbTimestampsChecker_8java_source.html

...corpora_1_1validation_1_1ExbEventTokenizationChecker.html

...1corpora_1_1validation_1_1ExbForbiddenSymbolsChecker.html

...urg_1_1corpora_1_1validation_1_1ExbTimestampsChecker.html